Name:
Additional Exercises 1.7
Date:
Simplify. 1. 9a 2a 7
1.
2. 9 y 2x 7 x
2.
3. 3b 8b
3.
4. 8 y 6 5 2 y 3
4.
5. 5.6k 1.4 3.4k 2 2.5k
5.
6. 6 8x 4 y 8x 4 y 6
6.
7. 9 x 6 6x 4 4 9 x5 2x 4 3
7.
8. 12 x 6 y 6 4 x 3 y 4
8.
3 2 1 2 1 y y 8 2 4
9.
9. 10.
8 10 x 4 4 4 x 10
10.
11. 10ab 3 18ab 2 14 6ab 2 16ab 7ab 2
11.
12. 3wz 5 4 2wz 7
12.
5 3n 4 2n 7 13.
8n m 5n 12 6mn 7n 2
13.
14. 8 6x 3 6 9 x 7 15.
4 2 x y 11
9 2 x y 22
14. 5
x2 y 22
16. 32n 7 5n 6 3n 2n 5n 7 5n5 4
15.
16.
17.
17.
18. Find the perimeter of a square with sides of length x 7 .
18.
19. Find the perimeter of a triangle whose sides are of lengths 3x 1 , 7 x 4 , and 2x .
19.
20. The value of 6 dimes is 10 6 60 cents . Likewise, the value of x dimes is 10 x . If Rick finds 8x dimes, 3x 2 nickels, and x quarters in his change cup, express the total value of the change in cents as an algebraic expression.
20.
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